DE4032927A1 - Motor vehicle driver's vision enhancement by IR imaging - involves head=up display virtual image converted from reflection of IR component of headlamp emission - Google Patents

Motor vehicle driver's vision enhancement by IR imaging - involves head=up display virtual image converted from reflection of IR component of headlamp emission

Info

Publication number
DE4032927A1
DE4032927A1 DE4032927A DE4032927A DE4032927A1 DE 4032927 A1 DE4032927 A1 DE 4032927A1 DE 4032927 A DE4032927 A DE 4032927A DE 4032927 A DE4032927 A DE 4032927A DE 4032927 A1 DE4032927 A1 DE 4032927A1
Authority
DE
Germany
Prior art keywords
motor vehicle
driver
camera
component
virtual image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE4032927A
Other languages
German (de)
Other versions
DE4032927C2 (en
Inventor
Frieder Heizmann
Christian Dipl Ing Lietar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE4032927A priority Critical patent/DE4032927A1/en
Publication of DE4032927A1 publication Critical patent/DE4032927A1/en
Application granted granted Critical
Publication of DE4032927C2 publication Critical patent/DE4032927C2/de
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/20—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/22—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle
    • B60R1/23—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view
    • B60R1/24—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view in front of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Arrangement of adaptations of instruments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/20—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/30—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles providing vision in the non-visible spectrum, e.g. night or infrared vision
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
    • G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/10—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used
    • B60R2300/106—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used using night vision cameras
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/20—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of display used
    • B60R2300/205—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of display used using a head-up display
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
    • B60R2300/8053—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for bad weather conditions or night vision
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0138—Head-up displays characterised by optical features comprising image capture systems, e.g. camera
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/30—Transforming light or analogous information into electric information
    • H04N5/33—Transforming infrared radiation

Abstract

The range of vision of the driver (17) is extended by an IR sensitive camera (14) connected to a display device (16) which projects the image onto the windscreen. The driver sees simultaneously and uninterruptedly the areas served by the fog lamps (11) and the IR camera (14). For good superposition of the virtual and real images, the camera should be mounted close to the driver's eyes, e.g. on the internal rear-view mirror. Halogen lamp emission contains a sufficient IR component. USE/ADVANTAGE - IR vision system for car driver. Safety, esp. in fog, is enhanced without additional dazzle of oncoming drivers.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Vorrichtung zur Verbesserung der Sichtverhältnisse in einem Kraftfahrzeug nach der Gattung des Haupt­ anspruchs. Aus der DE-OS 38 32 720 ist eine Abstandsmeßeinrichtung zur berührungslosen Abstands- und Winkelerkennung von Gegenständen, insbesondere im Nahbereich von Kraftfahrzeugen bekannt, bei der die Abstandsmeßeinrichtung auf einem Ultraschallverfahren beruht, während die Winkelerkennung ein Infrarotverfahren verwendet. Die bekannte Vorrichtung weist gegenüber der menschlichen Wahrnehmung den Vorteil auf, daß selbst bei ungünstigen Sichtverhältnissen für einen Fahrer des Kraftfahrzeugs, insbesondere bei Nebel, jeweils Meßwerte erhalten werden. Dieser Vorteil wird dadurch erreicht, daß insbesondere die Infrarotstrahlung durch Nebel weniger gedämpft wird als der sichtbare Strahlungsbereich. Zur Anzeige der erfaßten Meß­ werte ist beispielsweise ein graphikfähiger Bildschirm vorgesehen, der die Umgebung des Kraftfahrzeugs darstellt und gegebenenfalls Meßwerte einblendet. The invention relates to a device for improving the Visibility in a motor vehicle according to the type of the main demanding DE-OS 38 32 720 is a distance measuring device for non-contact distance and angle detection of objects, especially known in the vicinity of motor vehicles, in which the Distance measuring device is based on an ultrasound method, while angle detection uses an infrared technique. The known device points towards human perception the advantage that even with poor visibility for a driver of the motor vehicle, especially in fog, in each case Measured values are obtained. This advantage is achieved in that In particular, infrared radiation is less dampened by fog than the visible radiation area. To display the recorded measurement values, a graphics-capable screen is provided, for example, which represents the surroundings of the motor vehicle and, if appropriate Fade in measured values.  

Eine andere Anzeigevorrichtung, die Anwendung in Kraftfahrzeugen findet, ist aus der DE-OS 38 22 222 bekannt, die eine Einrichtung für Head-up-Displays in Kraftfahrzeugen beschreibt. Ein Head-up-Dis­ play spiegelt bildhaft dargestellte Anzeigemuster in das Sichtfeld des Fahrers. Dabei werden auf einen Teil der Windschutzscheibe, der im Sichtfeld des Fahrers liegt, Meß- oder Warnsignale eingeblendet. Zur Überlagerung des virtuellen Bildes, das aus den Anzeigenele­ menten gebildet wird, mit dem tatsächlichen Bild der äußeren Land­ schaft ist beispielsweise ein teildurchlässiger Spiegel vorgesehen, wobei die Reflexion an der Windschutzscheibe ausgenutzt werden kann oder eine vor der Windschutzscheibe stehende zusätzliche Scheibe (Combiner) benutzt werden kann.Another display device for use in motor vehicles finds is known from DE-OS 38 22 222, which is a device for head-up displays in motor vehicles. A head-up dis play reflects pictorial display patterns in the field of vision of the driver. Do this on part of the windshield, the is in the driver's field of vision, measurement or warning signals are displayed. For overlaying the virtual image from the display element ment is formed with the actual image of the outer country for example, a partially transparent mirror is provided, the reflection on the windshield can be exploited or an additional pane in front of the windshield (Combiner) can be used.

Der erfindungsgemäßen Vorrichtung liegt die Aufgabe zugrunde, die Sichtverhältnisse, insbesondere bei Nebel, zu verbessern.The device of the invention is based on the task To improve visibility, especially in fog.

Diese Aufgabe wird durch die im Hauptanspruch angegebenen Merkmale gelöst.This object is achieved by the features specified in the main claim solved.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Vorrichtung weist den Vorteil auf, daß die Ver­ kehrssicherheit durch eine Vergrößerung des Sichtbereichs erhöht wird. Innerhalb des Sichtbereichs und zumindest innerhalb eines be­ stimmten Blickwinkels, der von der erfindungsgemäßen Vorrichtung er­ faßt wird, wird der Straßenraum oder die äußere Landschaft nahezu vollständig gesehen.The device according to the invention has the advantage that the Ver Road safety increased by increasing the field of vision becomes. Within the field of view and at least within a be agreed viewing angle of the device according to the invention is grasped, the street space or the external landscape becomes almost completely seen.

Die Auswertung eines erfaßten Bildes erfolgt durch den Fahrer des Kraftfahrzeugs, ohne daß eine aufwendige Signalverarbeitung not­ wendig wäre. The evaluation of a captured image is carried out by the driver of the Motor vehicle, without the need for complex signal processing would be agile.  

Die erfindungsgemäße Vorrichtung weist ferner den Vorteil auf, daß keine zusätzliche Blendung anderer Verkehrsteilnehmer auftritt.The device according to the invention also has the advantage that there is no additional glare to other road users.

Vorteilhafte Weiterbildungen und Verbesserungen der erfindungsge­ mäßen Vorrichtung ergeben sich aus Unteransprüchen und werden in der folgenden Beschreibung näher erläutert.Advantageous further developments and improvements of the fiction moderate device result from subclaims and are in the following description explained in more detail.

Zeichnungdrawing

Eine erfindungsgemäße Vorrichtung zur Verbesserung der Sichtver­ hältnisse in einem Kraftfahrzeug ist in der Figur dargestellt.A device according to the invention for improving the sight Ratios in a motor vehicle is shown in the figure.

In der Figur ist ein Kraftfahrzeug 10 gezeigt, dessen Scheinwerfer und/oder Nebelscheinwerfer 11 den vor dem Fahrzeug 10 liegenden Sichtbereich 12 bestrahlen. Die Grenzen 13 der von den Scheinwerfern 11 ausgehenden Strahlung sind in der Figur strichliniert mit kurzen Strichen eingetragen. Die Strahlung der Scheinwerfer 11 enthält einen Infrarotstrahlungsanteil, der von einer im Fahrzeug 10 ange­ ordneten infrarotempfindlichen Kamera 14 erfaßt wird. Die Grenzen 15 der von der Kamera 14 erfaßten Strahlung sind in der Figur strich­ liniert mit langen Strichen eingetragen. Das von der Kamera 14 ab­ gegebene Bild ist einer Anzeigevorrichtung 16 zugeführt, die das Bild der Kamera 14 als virtuelles Bild dem Bild der äußeren Land­ schaft visuell überlagert.In the figure, a motor vehicle 10 is shown, the headlights and / or fog lights 11 of which illuminate the visible area 12 lying in front of the vehicle 10 . The limits 13 of the radiation emanating from the headlights 11 are shown in the figure by dashed lines with short dashes. The radiation of the headlights 11 contains an infrared radiation component which is detected by an infrared-sensitive camera 14 arranged in the vehicle 10 . The boundaries 15 of the radiation detected by the camera 14 are shown in the figure with dashed lines and long lines. The image given by the camera 14 is supplied to a display device 16 which visually overlays the image of the camera 14 as a virtual image of the image of the outer landscape.

Mit der erfindungsgemäßen Vorrichtung sieht der Fahrer 17 gleich­ zeitig und ununterbrochen den Sichtbereich 12 soweit wie möglich direkt mit der sichtbaren Strahlung und den entfernteren Straßen­ raum, der beispielsweise in Nebel gehüllt ist, mit Hilfe der von der Kamera 14 erfaßten Infrarotstrahlung. Die Auswertung der über­ lagerten Bilder erfolgt ausschließlich durch einen Fahrer 17, wobei keine weitere Signalverarbeitung nötig ist. With the device according to the invention, the driver 17 sees the viewing area 12 simultaneously and continuously as far as possible directly with the visible radiation and the more distant road space, which is, for example, enveloped in fog, with the help of the infrared radiation detected by the camera 14 . The overlaid images are evaluated exclusively by a driver 17 , no further signal processing being necessary.

Um eine gute Überlagerung des virtuellen Bildes mit dem tatsäch­ lichen Bild der äußeren Landschaft zu erhalten, sollte die Infrarot­ kamera 14 möglichst in Augennähe des Fahrers 17, beispielsweise bei einem Rückspiegel des Kraftfahrzeugs 10 angeordnet sein. Anderer­ seits sollte das optische System, das die Kamera 14 und die Anzeige­ vorrichtung 16 enthält, so ausgelegt sein, daß ein Betrachtungs­ winkel α der sichtbar gemachten Infrarotaufnahme der äußeren Land­ schaft dem Betrachtungswinkel β des direkt betrachteten Sichtbe - reichs 12 entsprechen. Weiterhin sollte die Darstellung der Infra­ rotaufnahme vor den Augen so weit entfernt sein, daß beim Betrachten keine Akkommodation nötig ist. Als Anzeigevorrichtung ist ein be­ kanntes Head-up-Display vorgesehen.In order to obtain a good overlay of the virtual image with the actual image of the outer landscape, the infrared camera 14 should be arranged as close as possible to the eyes of the driver 17 , for example in a rearview mirror of the motor vehicle 10 . On the other hand, the optical system, which contains the camera 14 and the display device 16 , should be designed such that a viewing angle α of the infrared image made visible of the outer landscape corresponds to the viewing angle β of the directly viewed viewing area 12 . Furthermore, the representation of the infrared image in front of the eyes should be so far away that no accommodation is necessary when viewing. A known head-up display is provided as a display device.

Der Infrarotstrahlungsanteil der derzeit verwendeten Glühlampen, gegebenenfalls mit Halogenzusatz, ist für die Bestrahlung des Sicht­ bereichs 12 ausreichend. Die in Zukunft gegebenenfalls vorgesehenen Entladungslampen weisen ein in Richtung auf kürzere Wellenlängen hin verschobenes Spektrum auf, so daß gegebenenfalls zusätzliche Infrarotstrahler erforderlich werden. Eine zusätzliche Blendung ent­ gegenkommender Fahrer von Kraftfahrzeugen tritt nicht auf.The infrared radiation component of the incandescent lamps currently used, possibly with halogen addition, is sufficient for irradiating the viewing area 12 . The discharge lamps which may be provided in the future have a spectrum which is shifted towards shorter wavelengths, so that additional infrared radiators may be required. There is no additional glare for oncoming drivers of motor vehicles.

Claims (4)

1. Vorrichtung zur Verbesserung der Sichtverhältnisse in einem Kraftfahrzeug, dadurch gekennzeichnet, daß zur Bestrahlung des von einem Fahrer (17) erfaßten Sichtbereichs (12) in Fahrtrichtung wenigstens eine Strahlungsquelle (11) mit einem Infrarotstrahlungs­ anteil vorgesehen ist, daß eine infrarotempfindliche Kamera (14) den Sichtbereich (12) wenigstens näherungsweise unter einem gleichen Blickwinkel wie der Fahrer (17) aufnimmt, und daß eine Anzeigevor­ richtung (16) vorgesehen ist, die das Bild der Kamera (17) als virtuelles Bild dem Bild der äußeren Landschaft visuell überlagert.1. A device for improving the visibility in a motor vehicle, characterized in that at least one radiation source ( 11 ) with an infrared radiation portion is provided for irradiating the visual range ( 12 ) detected by a driver ( 17 ) in the direction of travel, that an infrared-sensitive camera ( 14 ) the viewing area ( 12 ) at least approximately at the same angle as the driver ( 17 ), and that a device ( 16 ) is provided which visually superimposes the image of the camera ( 17 ) as a virtual image on the image of the external landscape. 2. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß als Infrarotstrahlungsquelle (11) die vorhandenen Schweinwerfer des Kraftfahrzeugs (10) vorgesehen sind.2. Device according to claim 2, characterized in that the existing headlights of the motor vehicle ( 10 ) are provided as the infrared radiation source ( 11 ). 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß als Infrarotstrahlungsquelle (11) spezielle Infrarotstrahler vorgesehen sind.3. Apparatus according to claim 1, characterized in that special infrared emitters are provided as the infrared radiation source ( 11 ). 4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Kamera (17) bei einem Rückspiegel des Kraft­ fahrzeugs (10) angeordnet ist.4. Device according to one of the preceding claims, characterized in that the camera ( 17 ) is arranged at a rearview mirror of the motor vehicle ( 10 ).
DE4032927A 1990-10-17 1990-10-17 Motor vehicle driver's vision enhancement by IR imaging - involves head=up display virtual image converted from reflection of IR component of headlamp emission Granted DE4032927A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4032927A DE4032927A1 (en) 1990-10-17 1990-10-17 Motor vehicle driver's vision enhancement by IR imaging - involves head=up display virtual image converted from reflection of IR component of headlamp emission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4032927A DE4032927A1 (en) 1990-10-17 1990-10-17 Motor vehicle driver's vision enhancement by IR imaging - involves head=up display virtual image converted from reflection of IR component of headlamp emission

Publications (2)

Publication Number Publication Date
DE4032927A1 true DE4032927A1 (en) 1992-04-30
DE4032927C2 DE4032927C2 (en) 1993-04-15

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US8818042B2 (en) 2004-04-15 2014-08-26 Magna Electronics Inc. Driver assistance system for vehicle
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